ProWallGuy said:I always thought those black stains (little black dots) were some type of oxidation. I've never been able to remove them completely.
I have had that same exact problem so I asked a few local contractors what they do. One of them told me about a guy that has a patented product about to kick off in 3-09. He said I could find out more about it at Marxoff.com so I checked it out and I am going to get one as soon as you can purchase them. The tool is made like a gutter and uses lambswool that you dip in an industrial cleaner and stand on the ground without having to use a ladder. It looks like it does a good job. I will let you guys know how it works. If anyone buys one let me know also. Thanks, BrianCan you guys recommend any product that will clean the outside of the gutter? (Housing) This 3-year-old gutter has black stains all over it. I need some sort of chemical solution that will bring that back new again. Maybe some sort of aluminum cleaner?